A comparison of tillage systems
Subtitle: for reducing soil erosion and water pollution
By: Lee A. Christensen, Patricia E. Norris
Contributors: Norris, Patricia E; United States. Dept. of Agriculture. Economic Research Service
Series: Agricultural economic report -- no. 499
Publisher: U.S. Dept. of Agriculture, Economic Research Service; National Technical Information Service, Identification Section, distributor
Published: 1983
Place of publication: Washington, D.C; Springfield, Va
Language: eng
Number of pages: 27
Subjects: Tillage -- United States; Soil conservation -- United States; Water -- Pollution -- United States
Notes: Distributed to depository libraries in microfiche

"May 1983"--T.p. verso

Bibliography: p. 22-27